Billy and the Mets in 'Last Play at Shea'

The dual-purpose documentary "Last Play at Shea" chronicles the history of Shea Stadium, onetime home to the Mets, and Billy Joel, the native Long Islander who in July 2008 played the venue's final concerts before its demolition later that year.

Baseball and classic rock - if you like one, you'll like the other, right? When the movie works, it resembles a bottle that handily contains both shampoo and conditioner. At other times, it's more like bacon-flavored chocolate: two great tastes that don't necessarily taste great together.

One possible reason that Joel takes up half the running time is that he helped produce the film with his Maritime Pictures company. Director Paul Crowder gets access to Joel's ex-wife Christie Brinkley; their daughter, Alexa Ray Joel; and Paul McCartney, who joined Joel at Shea for versions of The Beatles' "I Saw Her Standing There" and "Let It Be." (Another native Long Islander, Alec Baldwin, provides the narration.)

All of which is engaging enough, but then it's back to baseball, with replays of famous Mets moments like the black cat that doomed the Cubs in 1969 and quickie interviews with players like Mike Piazza and Keith Hernandez. Ultimately, this two-in-one movie recalls a line from comedian Mitch Hedberg, who pointed out that two doesn't actually fit in one - that's why two was invented.